While tundra labs has given out files to be able to create PCB boards for their chip, it was only for Altium.
So, I went ahead and created a schematic and footprint based on their datasheet, and imported their 3d model into kicad.
You can find it here: https://gist.github.com/alatnet/0b7db9bad6b75f81eb226ea34bd6017b
And for the chip itself, you can find it here: https://tundra-labs.com/products/tl448k6d-vr-system-in-package-for-steamvr-tracking
